wolcott



2 Sheets-Sheet 1.

(No Model.)

H. D, WOLGOTT. GIRGULAR SAW DRESSER.

Patented. June 15, 1886 INVENTOR: 5%2510 BY .Mwm

ATTORNEYS.

WITNESSES (No Model.) 2 Sheets-Sheet 2.

' H. D. WOLGOTT.

UIRGULAR SAW DRESSER.

No. 348,785. Patented June 15, 1886.

INVENTOR ifnw WITNESSES BY Vail/MM ATTORNEYS N. PETERS. mwum n ho wminm. n. cy

UNITED STATES PATENT triers,

HYMAN D. WOLCOTI, OF WRIGHTS, PENNSYLVANIA.

CIRCULAR-SAW DRESSER.

SPECIFICATION forming part of Letters Patent No. 343,785, dated June 15,1886.

' Application filed Dece1nber24, 1885. Serial No. 186,597. (No model.)

To all whom it may concern:

Be it known that I, HYMAN D. WOLOOTT, of WVrights, in the county ofMcKean and State of Pennsylvania, have invented a new and ImprovedCircular-Saw Dresser, of which the following is a full, clear, and exactdescription.

This invention relates to the construction of a saw-dresser applicablefor use as an attachment for that form of saw-jointer illustrated anddescribed in Letters Patent No. 298,538, granted to me on the 13th dayof May, 1884 The object of the invention is to provide an attachmentwhereby the saw-teeth will be uniformly dressed, and so shaped that theywill remain sharp fora muchlonger time than they do with the ordinaryform of dresser; and to this end the invention consists of a pair ofbeveled and circular files that are mounted in a frame secured to theguidingarms of a saw-jointer, and arranged so as to be adjusted to orfrom the saw and be held in yielding connection therewith, as will behereinafter described, and specifically pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figurel is a side view ofthesaw'jointer with my attachment appliedthereto. Fig. 2 is a View of one of the beveled circular files and itsconnections, a portion of the device being shown in section to disclosethe construction of the parts. Fig. 3 is a sectional plan view of thejointer provided with my improved dresser on the line a; m, Fig. 1,parts being broken away.

Before proceeding with the description of the attachment forming thesubject-matter of this application I will briefly describe theconstruction of the saw-jointer in connection with which it is designedto be used.

In constructing this saw-jointer I make a base-plate, a, with a deepgroove, Z in the back, and a slot, 0, through the front to bolt on theside of the filing-bench d by bolts 0, through the ends of said platefor holding the file and guide-supporting stock f in front of the saw 9to be jointed, said stock f being clamped against the front side of saidbaseplate a by the bolt h and the thumb-nut i, and having guide-lugsj,bearing against the upper and lower edges, is, of the base-plate, whichare beveled, so that the guide-lugs being correspondingly beveled willdraw snugly on to them when the bolt h is screwed up tight. and hold thefile-supporting stock up rigidly against back-pressure at the upper end.This supporting-stock may be shifted along the base-plate toward andfrom the saw, as required for adjusting it by slackening the bolt h andshifting it along the groove b and the slot 0 of the base-plate. Thegroove b affords the requisite space in the base-plate between the frontof said plate and the side of the filing-bench for the head of the bolth, and the side walls of the groove hold the bolt from turning by thefriction of the nut. The fileholding plate Z is connected to the lowerend of the supporting-stock f by the bolt in, and has a flexible'bow, n,projecting below the lower end of the file-stock to enable the plate toshift to and from the saw g, and near the upper end of the stock an adjustingscrew, 0, is fitted, bearing against the side of the plate, tocause the filep to bear against the points of the teeth with sufficientpressure to dress them off and to set up the file as the points arefiled away. The tile 19 is secured to the plate I by a hook-clamp, q,and binding-screw s. A couple of guide-arms, u, with screw saw-guides o,are attached to the supporting'stock f near the upper end for guidingthe saw to prevent the saw from wabbling, and also to bear it to oneside or the other, as

may sometimes be required, to make the teeth slightly shorter on oneside than on the other, to correct any tendency of the saw to run out ofline in the logs. The screwguides are adjustable in the guidearms, andthe guide-arms are adjustable in the supporting-stock, said arms beingconnected to the stock by elbows 10, inserted in a mortise through thestock and overlapping each other therein, so as to be secured in anyposition bya binding-screw, x. This construction is the same as thatheretofore described by me in my patent above referred to, and I wouldnow refer more particularly to Fig. 2 of the drawings, wherein A is acircular bevel-faced file mounted upon a circular disk, B, formed to fitagainst the under and convex surface of the file A, which is placed sothat it abuts against a fiange, a, formed on the disk B, the file beingheld against the flange by a clamping or binding lug, O, which passesthrough the disk B, and has a threaded shank that is engaged by a nut,D, by which arrangement the file is held rigidly against the disk. .Twohorizontal arms, E E, are fixed to the disk B, the projecting ends ofthese arms being united by a tie-bar, F, the disk, arms, and tie-barbeing rigidly connected. Between the arms E E there is asupporting-stock, G, formed with ways 9 g, in which the arms E E ride.This stock G is provided with acentral aperture, G, so formed andproportioned that the guide-arms u may be inserted therein, the stockbeing secured tothe guide-arm by set-screws c 0. Between the stock G andthe tie-bar F there is a jamstop, H, which is slotted at either end toreceive the arms E E, and in the center of this jam -stop H there is athreaded socket, h, which is engaged by an adj usting-screw, I, whichpasses through the tie-bar F and carries a collar, d, which is fittedwithin a groove formed in the stock G, as shown in Fig. 2. The spiralspring J is coiled about the adj ustable screw 1, and abuts against theouter face of the bar F and the under face of the thumbpiece 6, that isfixed to the end of the screw I, the action of the spring being to forcethe jam-stop H against the bar F. Two of these dressers are secured tothe arms u a in substantially the position shown in Fig. 3, with theset-screws c 0' upon the under side.

A proper adjustment of the dressing-files A is secured by means of thegraduated scale K, that is formed on the upper end of the stock G, thepointer L being carried by the arm E, this adjustment being broughtabout by means of the screw I, care being taken in setting up thedressers that they are exactly opposite each other. After the saw hasbeen 5 jointed in the usual manner and the teeth way and the saiddressers set to the required position by means of their feed oradjusting screws. After the dressers have been properly set the saw isturned in the same direction as when jointed until the'dresser-filescease to cut the teeth, and this operation is performed in a fraction ofthe time usually taken to dress the saws.

In addition to the speed with which the operation of dressing isperformed, it will be readily understood that the shape of the teethafter the saw has been dressed will be such that the teeth of the sawwill not readily become round, so as to work against the timber with abevel-edge, but that the cutting-edge will remain sharp, as the teethare cut with a cutting-edge to the will also be understood that althoughthe files may be positively adjusted against the side faces of the teethof the saw such files are maintained in the position to which they areadjusted by yielding connection with the supporting-stock, for shouldany undue pressure be brought to bear upon the files they will be forcedbackward against the tension of the Spring J.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In a circular-saw dresser, thecombination, with a stock, of ahorizontally-movable frame on the stock, a curved bevel-face file uponthe forward end of the frame, means for adjusting the frame in relationto the stock, and a spring acting to cushion the said file-supportingframe when moved rearward on the stock, substantially as set forth.

2. In a circular-saw dresser, the combina tion, with the disk having acircular beveled face, of a separate file shaped to fit the said beveledcircular face, and a clamping device for securing the file to the saiddisk, substantially as set forth.

3. The combination, in a circular saw dresser, with the disk B, havingthe circular beveled face and the shoulder a, of the file A, shaped tofit the said circular beveled face and abutting against the shoulder,and the clamping-lug 0, having a shank extending through the disk, and anut therefor, substantially as set forth.

4. In a circular'saw-dresser, the combination, with a file, A, of adisk, B, arms E E, bar F, stock G, stop H, screw I, and spring J,substantially as described.

5. In a circular-saw dresser, the combination, with a file, A, of adisk, B, clampinghook 0, arms E E, bar F, stock G, stop H, screw I, andspring J. the stock G being formed with a central aperture and providedwith setscrews 0 c.

6. The combination, with the arm a, of the stock G, adjustable on saidarm, the stop H, the disk B, carrying the file A, and provided with thearms E E, and bar F, upon which arms E the stock G and stop H areadapted to slide, the screw I, threaded into stop H and swiveled tostock G, and the spring J, substantially as shown and described.

, HYMAN D. WOLOOTT. Witnesses:

O. E. YATES, ALLEN YATES.

